CPDF_ContentParser::CPDF_ContentParser(CPDF_Form* pForm,
CPDF_AllStates* pGraphicStates,
const CFX_Matrix* pParentMatrix,
CPDF_Type3Char* pType3Char,
std::set<const uint8_t*>* parsedSet)
: m_CurrentStage(Stage::kParse),
m_pObjectHolder(pForm),
m_pType3Char(pType3Char) {
ASSERT(pForm);
CFX_Matrix form_matrix = pForm->GetDict()->GetMatrixFor("Matrix");
if (pGraphicStates)
form_matrix.Concat(pGraphicStates->m_CTM);
CPDF_Array* pBBox = pForm->GetDict()->GetArrayFor("BBox");
CFX_FloatRect form_bbox;
CPDF_Path ClipPath;
if (pBBox) {
form_bbox = pBBox->GetRect();
ClipPath.Emplace();
ClipPath.AppendRect(form_bbox.left, form_bbox.bottom, form_bbox.right,
form_bbox.top);
ClipPath.Transform(form_matrix);
if (pParentMatrix)
ClipPath.Transform(*pParentMatrix);
form_bbox = form_matrix.TransformRect(form_bbox);
if (pParentMatrix)
form_bbox = pParentMatrix->TransformRect(form_bbox);
}
CPDF_Dictionary* pResources = pForm->GetDict()->GetDictFor("Resources");
m_pParser = pdfium::MakeUnique<CPDF_StreamContentParser>(
pForm->GetDocument(), pForm->m_pPageResources.Get(),
pForm->m_pResources.Get(), pParentMatrix, pForm, pResources, form_bbox,
pGraphicStates, parsedSet);
m_pParser->GetCurStates()->m_CTM = form_matrix;
m_pParser->GetCurStates()->m_ParentMatrix = form_matrix;
if (ClipPath.HasRef()) {
m_pParser->GetCurStates()->m_ClipPath.AppendPath(ClipPath, FXFILL_WINDING,
true);
}
if (pForm->GetTransparency().IsGroup()) {
CPDF_GeneralState* pState = &m_pParser->GetCurStates()->m_GeneralState;
pState->SetBlendType(BlendMode::kNormal);
pState->SetStrokeAlpha(1.0f);
pState->SetFillAlpha(1.0f);
pState->SetSoftMask(nullptr);
}
m_pSingleStream = pdfium::MakeRetain<CPDF_StreamAcc>(pForm->GetStream());
m_pSingleStream->LoadAllDataFiltered();
m_pData.Reset(m_pSingleStream->GetData());
m_Size = m_pSingleStream->GetSize();
}
void CPDF_ContentParser::Start(CPDF_Form* pForm,
CPDF_AllStates* pGraphicStates,
const CFX_Matrix* pParentMatrix,
CPDF_Type3Char* pType3Char,
int level) {
m_pType3Char = pType3Char;
m_pObjectHolder = pForm;
m_bForm = true;
CFX_Matrix form_matrix = pForm->m_pFormDict->GetMatrixFor("Matrix");
if (pGraphicStates)
form_matrix.Concat(pGraphicStates->m_CTM);
CPDF_Array* pBBox = pForm->m_pFormDict->GetArrayFor("BBox");
CFX_FloatRect form_bbox;
CPDF_Path ClipPath;
if (pBBox) {
form_bbox = pBBox->GetRect();
ClipPath.Emplace();
ClipPath.AppendRect(form_bbox.left, form_bbox.bottom, form_bbox.right,
form_bbox.top);
ClipPath.Transform(&form_matrix);
if (pParentMatrix)
ClipPath.Transform(pParentMatrix);
form_bbox.Transform(&form_matrix);
if (pParentMatrix)
form_bbox.Transform(pParentMatrix);
}
CPDF_Dictionary* pResources = pForm->m_pFormDict->GetDictFor("Resources");
m_pParser.reset(new CPDF_StreamContentParser(
pForm->m_pDocument, pForm->m_pPageResources, pForm->m_pResources,
pParentMatrix, pForm, pResources, &form_bbox, pGraphicStates, level));
m_pParser->GetCurStates()->m_CTM = form_matrix;
m_pParser->GetCurStates()->m_ParentMatrix = form_matrix;
if (ClipPath) {
m_pParser->GetCurStates()->m_ClipPath.AppendPath(ClipPath, FXFILL_WINDING,
true);
}
if (pForm->m_Transparency & PDFTRANS_GROUP) {
CPDF_GeneralState* pState = &m_pParser->GetCurStates()->m_GeneralState;
pState->SetBlendType(FXDIB_BLEND_NORMAL);
pState->SetStrokeAlpha(1.0f);
pState->SetFillAlpha(1.0f);
pState->SetSoftMask(nullptr);
}
m_nStreams = 0;
m_pSingleStream.reset(new CPDF_StreamAcc);
m_pSingleStream->LoadAllData(pForm->m_pFormStream, false);
m_pData = (uint8_t*)m_pSingleStream->GetData();
m_Size = m_pSingleStream->GetSize();
m_Status = ToBeContinued;
m_InternalStage = STAGE_PARSE;
m_CurrentOffset = 0;
}